Aramid fiber , F-12 Aramid fiber for aviation and aerospace purpose
F-12 aramid fiber is one of the “aromatic polyamide” fibers which
are used widely in aviation, aerospace, electronic, airship,
personal protection and sports product.
Applications
Aramid fiber's original use was for car tire reinforcement, but in
transport, the fibers are used as a replacement for asbestos – for
example in brake linings. Probably the most widely known
application is in body armor, and other protective uses include
fireproof suits for firefighters, helmets, and gloves.
Their high strength/weight ratio makes them attractive for use as
reinforcing (for example in composite materials particularly where
flexing tolerance is important, such as aircraft wings). In
construction, we have fiber-reinforced concrete and thermoplastic
pipes. Corrosion is a major problem for expensive undersea
pipelines in the oil industry, and thermoplastic pipe technology
was developed to prolong pipeline life and reduce maintenance
costs.
Their low stretch properties (typically 3.5% at break), high
strength and abrasion resistance make aramid fibers ideal for ropes
and cables, and they are even used for mooring ships.
In the sporting arena, bowstrings, tennis racquet strings, hockey
sticks, skis and running shoes are some of the application areas
for these outstanding fibers, with sailors enjoying the benefits of
aramid-reinforced hulls, aramid lines and aramid fiber wear-patches
on their elbows, knees, and rears!
Chemical and physical property of F-12 Aramid fiber
| Density (g/cm3) | 1.43±0.1 | Limited Oxygen index (LOI) | 35 |
| Saturated moisture absorption (%) | ≤3.0 | Heat expansion index (10-6/K | ±1 |
| Glass transition temperature (℃) | 264 | Decomposition temperature (℃) | |
| High temperature performance | 200℃, strength lowered by 25% for 100 hours | Low temperature performance | Strength maintains the same at -194℃ |
| Dielectric constant | 3.4 (23℃) | Dielectric loss | 0.00645 (23℃) |
| Creep property | 60% breaking load, 300 days, creeping increment 0.131% |
Mechanical property of F-12 Aramid fiber
| Model | 23T | 44T | 44THM | 63T | 100T | 130T | 200T |
| Line density(tex) | 23±2 | 44±3 | 44±3 | 63±4 | 100±5 | 130±5 | 200±5 |
| Impregnation tensile strength (GPa) | ≥4.3 | ≥4.3 | ≥4.0 | ≥4.2 | ≥4.2 | ≥4.2 | ≥4.2 |
| Impregnation elastic module (GPa) | ≥120 | ≥120 | ≥145 | ≥120 | ≥120 | ≥120 | ≥120 |
| Elongation (%) | ≥2.6 |
